/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test24-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 20:00:41,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 20:00:41,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 20:00:41,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 20:00:41,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 20:00:41,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 20:00:41,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 20:00:41,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 20:00:41,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 20:00:41,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 20:00:41,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 20:00:41,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 20:00:41,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 20:00:41,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 20:00:41,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 20:00:41,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 20:00:41,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 20:00:41,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 20:00:41,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 20:00:41,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 20:00:41,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 20:00:41,586 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 20:00:41,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 20:00:41,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 20:00:41,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 20:00:41,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 20:00:41,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 20:00:41,606 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 20:00:41,607 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 20:00:41,627 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 20:00:41,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 20:00:41,628 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 20:00:41,629 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 20:00:41,629 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 20:00:41,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 20:00:41,634 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 20:00:41,635 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 20:00:41,635 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 20:00:41,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 20:00:41,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 20:00:41,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 20:00:41,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 20:00:41,636 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 20:00:41,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 20:00:41,636 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 20:00:41,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 20:00:41,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 20:00:41,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 20:00:41,637 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 20:00:41,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 20:00:41,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 20:00:41,640 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 20:00:41,640 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 20:00:41,640 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 20:00:41,640 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 20:00:41,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:00:41,641 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 20:00:41,641 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 20:00:41,641 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 20:00:41,942 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 20:00:41,960 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 20:00:41,964 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 20:00:41,965 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 20:00:41,966 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 20:00:41,966 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test24-1.c [2020-07-21 20:00:42,038 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e22ca7d9/d5af0b91441140e8bcec4c413cfbeb22/FLAGbb219884c [2020-07-21 20:00:42,512 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 20:00:42,512 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test24-1.c [2020-07-21 20:00:42,521 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e22ca7d9/d5af0b91441140e8bcec4c413cfbeb22/FLAGbb219884c [2020-07-21 20:00:42,862 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e22ca7d9/d5af0b91441140e8bcec4c413cfbeb22 [2020-07-21 20:00:42,872 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 20:00:42,876 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 20:00:42,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 20:00:42,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 20:00:42,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 20:00:42,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:00:42" (1/1) ... [2020-07-21 20:00:42,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39d62506 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:00:42, skipping insertion in model container [2020-07-21 20:00:42,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:00:42" (1/1) ... [2020-07-21 20:00:42,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 20:00:42,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 20:00:43,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 20:00:43,090 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 20:00:43,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 20:00:43,121 INFO L208 MainTranslator]: Completed translation [2020-07-21 20:00:43,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:00:43 WrapperNode [2020-07-21 20:00:43,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 20:00:43,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 20:00:43,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 20:00:43,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 20:00:43,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:00:43" (1/1) ... [2020-07-21 20:00:43,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:00:43" (1/1) ... [2020-07-21 20:00:43,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:00:43" (1/1) ... [2020-07-21 20:00:43,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:00:43" (1/1) ... [2020-07-21 20:00:43,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:00:43" (1/1) ... [2020-07-21 20:00:43,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:00:43" (1/1) ... [2020-07-21 20:00:43,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:00:43" (1/1) ... [2020-07-21 20:00:43,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 20:00:43,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 20:00:43,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 20:00:43,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 20:00:43,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:00:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 20:00:43,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 20:00:43,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 20:00:43,294 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-07-21 20:00:43,294 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 20:00:43,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 20:00:43,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 20:00:43,294 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-21 20:00:43,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 20:00:43,295 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 20:00:43,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 20:00:43,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 20:00:43,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 20:00:43,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 20:00:43,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 20:00:43,559 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 20:00:43,560 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 20:00:43,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:00:43 BoogieIcfgContainer [2020-07-21 20:00:43,567 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 20:00:43,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 20:00:43,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 20:00:43,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 20:00:43,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:00:42" (1/3) ... [2020-07-21 20:00:43,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45eca637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:00:43, skipping insertion in model container [2020-07-21 20:00:43,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:00:43" (2/3) ... [2020-07-21 20:00:43,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45eca637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:00:43, skipping insertion in model container [2020-07-21 20:00:43,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:00:43" (3/3) ... [2020-07-21 20:00:43,576 INFO L109 eAbstractionObserver]: Analyzing ICFG test24-1.c [2020-07-21 20:00:43,584 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 20:00:43,592 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 20:00:43,605 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 20:00:43,625 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 20:00:43,625 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 20:00:43,625 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 20:00:43,625 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 20:00:43,626 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 20:00:43,626 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 20:00:43,626 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 20:00:43,626 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 20:00:43,640 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-07-21 20:00:43,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 20:00:43,645 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:00:43,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:00:43,647 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:00:43,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:00:43,652 INFO L82 PathProgramCache]: Analyzing trace with hash 149844724, now seen corresponding path program 1 times [2020-07-21 20:00:43,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:00:43,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55999933] [2020-07-21 20:00:43,661 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:00:43,760 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:00:43,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:00:43,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 20:00:43,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:00:43,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:00:43,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:00:43,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55999933] [2020-07-21 20:00:43,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:00:43,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 20:00:43,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386217174] [2020-07-21 20:00:43,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 20:00:43,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:00:43,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 20:00:43,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 20:00:43,815 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-07-21 20:00:43,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:00:43,835 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2020-07-21 20:00:43,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 20:00:43,836 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-07-21 20:00:43,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:00:43,846 INFO L225 Difference]: With dead ends: 35 [2020-07-21 20:00:43,847 INFO L226 Difference]: Without dead ends: 17 [2020-07-21 20:00:43,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 20:00:43,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-07-21 20:00:43,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-07-21 20:00:43,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-21 20:00:43,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-07-21 20:00:43,888 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2020-07-21 20:00:43,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:00:43,889 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-07-21 20:00:43,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 20:00:43,889 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-07-21 20:00:43,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-21 20:00:43,890 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:00:43,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:00:44,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:00:44,106 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:00:44,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:00:44,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1249419983, now seen corresponding path program 1 times [2020-07-21 20:00:44,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:00:44,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255071981] [2020-07-21 20:00:44,109 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:00:44,183 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 20:00:44,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:00:44,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-21 20:00:44,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:00:44,262 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2020-07-21 20:00:44,263 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:00:44,286 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:00:44,289 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 20:00:44,290 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:56, output treesize:52 [2020-07-21 20:00:44,322 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 20:00:44,325 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:00:44,326 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 21 [2020-07-21 20:00:44,329 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:00:44,339 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:00:44,341 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-07-21 20:00:44,342 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:59, output treesize:30 [2020-07-21 20:00:44,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:00:44,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:00:44,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255071981] [2020-07-21 20:00:44,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:00:44,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 20:00:44,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006355524] [2020-07-21 20:00:44,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 20:00:44,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:00:44,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 20:00:44,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 20:00:44,378 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 4 states. [2020-07-21 20:00:44,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:00:44,445 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-07-21 20:00:44,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 20:00:44,446 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-07-21 20:00:44,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:00:44,447 INFO L225 Difference]: With dead ends: 27 [2020-07-21 20:00:44,448 INFO L226 Difference]: Without dead ends: 19 [2020-07-21 20:00:44,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 20:00:44,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-07-21 20:00:44,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-07-21 20:00:44,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-21 20:00:44,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-07-21 20:00:44,454 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2020-07-21 20:00:44,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:00:44,455 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-07-21 20:00:44,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 20:00:44,455 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-07-21 20:00:44,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-21 20:00:44,456 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:00:44,456 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:00:44,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:00:44,671 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:00:44,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:00:44,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1840889772, now seen corresponding path program 1 times [2020-07-21 20:00:44,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:00:44,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230599858] [2020-07-21 20:00:44,674 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:00:44,725 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:00:44,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:00:44,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2020-07-21 20:00:44,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:00:44,746 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2020-07-21 20:00:44,746 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:00:44,756 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:00:44,757 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 20:00:44,757 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:34 [2020-07-21 20:00:46,891 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_main_~#ad1~0.base_BEFORE_CALL_1| Int) (|v_main_~#ad1~0.offset_BEFORE_CALL_1| Int) (main_~pa~0.offset Int)) (and (= 0 (mod (+ (* |v_main_~#ad1~0.offset_BEFORE_CALL_1| 7) main_~pa~0.offset) 8)) (let ((.cse0 (div (+ (* |v_main_~#ad1~0.offset_BEFORE_CALL_1| (- 1)) main_~pa~0.offset) 8))) (= .cse0 (select (select |c_#memory_int| |v_main_~#ad1~0.base_BEFORE_CALL_1|) (+ |v_main_~#ad1~0.offset_BEFORE_CALL_1| (* .cse0 8))))))) is different from true [2020-07-21 20:00:57,167 WARN L193 SmtUtils]: Spent 10.23 s on a formula simplification. DAG size of input: 38 DAG size of output: 38 [2020-07-21 20:00:57,181 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:00:57,188 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:00:57,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:00:57,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 20:00:57,366 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:00:57,425 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:00:57,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:00:57,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230599858] [2020-07-21 20:00:57,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 20:00:57,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2020-07-21 20:00:57,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410812518] [2020-07-21 20:00:57,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-21 20:00:57,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:00:57,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-21 20:00:57,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=169, Unknown=1, NotChecked=26, Total=240 [2020-07-21 20:00:57,599 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 16 states. [2020-07-21 20:00:57,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:00:57,919 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-07-21 20:00:57,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 20:00:57,919 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2020-07-21 20:00:57,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:00:57,920 INFO L225 Difference]: With dead ends: 19 [2020-07-21 20:00:57,920 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 20:00:57,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=74, Invalid=235, Unknown=1, NotChecked=32, Total=342 [2020-07-21 20:00:57,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 20:00:57,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 20:00:57,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 20:00:57,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 20:00:57,922 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-07-21 20:00:57,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:00:57,922 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 20:00:57,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-21 20:00:57,922 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 20:00:57,922 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 20:00:58,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:00:58,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 20:01:00,263 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 27 DAG size of output: 1 [2020-07-21 20:01:00,266 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 20:01:00,267 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 20:01:00,267 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 20:01:00,267 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 20:01:00,267 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 20:01:00,267 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 20:01:00,267 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 20:01:00,267 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-07-21 20:01:00,268 INFO L268 CegarLoopResult]: For program point L29-1(lines 29 31) no Hoare annotation was computed. [2020-07-21 20:01:00,268 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 38) no Hoare annotation was computed. [2020-07-21 20:01:00,268 INFO L268 CegarLoopResult]: For program point L21(lines 21 32) no Hoare annotation was computed. [2020-07-21 20:01:00,268 INFO L268 CegarLoopResult]: For program point L21-2(lines 21 32) no Hoare annotation was computed. [2020-07-21 20:01:00,268 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 38) no Hoare annotation was computed. [2020-07-21 20:01:00,269 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 36) no Hoare annotation was computed. [2020-07-21 20:01:00,269 INFO L264 CegarLoopResult]: At program point L30(lines 15 38) the Hoare annotation is: false [2020-07-21 20:01:00,269 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 38) the Hoare annotation is: true [2020-07-21 20:01:00,270 INFO L268 CegarLoopResult]: For program point L26-1(lines 26 28) no Hoare annotation was computed. [2020-07-21 20:01:00,270 INFO L264 CegarLoopResult]: At program point L26-3(lines 26 28) the Hoare annotation is: (and (= 0 (mod (+ main_~pa~0.offset (* |main_~#ad1~0.offset| 7)) 8)) (let ((.cse0 (div (+ main_~pa~0.offset (* |main_~#ad1~0.offset| (- 1))) 8))) (= (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* .cse0 8) |main_~#ad1~0.offset|)) .cse0)) (<= main_~i~0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset)) (= main_~pa~0.base |main_~#ad1~0.base|)) [2020-07-21 20:01:00,270 INFO L264 CegarLoopResult]: At program point L26-4(lines 26 28) the Hoare annotation is: (and (let ((.cse0 (div (+ main_~pa~0.offset (* |main_~#ad1~0.offset| (- 1))) 8))) (= (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* .cse0 8) |main_~#ad1~0.offset|)) .cse0)) (= 0 (mod (+ main_~pa~0.offset (* |main_~#ad1~0.offset| 7)) 8)) (<= main_~i~0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset)) (= main_~pa~0.base |main_~#ad1~0.base|) (exists ((main_~pa~0.offset Int)) (let ((.cse1 (select |#memory_int| |main_~#ad1~0.base|))) (let ((.cse3 (select .cse1 main_~pa~0.offset))) (and (let ((.cse2 (div (+ main_~pa~0.offset (* |main_~#ad1~0.offset| (- 1))) 8))) (= (select .cse1 (+ (* .cse2 8) |main_~#ad1~0.offset|)) .cse2)) (= 0 (mod (+ main_~pa~0.offset (* |main_~#ad1~0.offset| 7)) 8)) (<= main_~i~0 .cse3) (<= .cse3 main_~i~0)))))) [2020-07-21 20:01:00,270 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 9 12) the Hoare annotation is: true [2020-07-21 20:01:00,270 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 9 12) no Hoare annotation was computed. [2020-07-21 20:01:00,271 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 9 12) no Hoare annotation was computed. [2020-07-21 20:01:00,281 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-21 20:01:00,282 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-21 20:01:00,287 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-21 20:01:00,288 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-21 20:01:00,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:01:00 BoogieIcfgContainer [2020-07-21 20:01:00,292 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 20:01:00,293 INFO L168 Benchmark]: Toolchain (without parser) took 17419.28 ms. Allocated memory was 145.2 MB in the beginning and 235.4 MB in the end (delta: 90.2 MB). Free memory was 103.0 MB in the beginning and 125.9 MB in the end (delta: -22.9 MB). Peak memory consumption was 67.3 MB. Max. memory is 7.1 GB. [2020-07-21 20:01:00,294 INFO L168 Benchmark]: CDTParser took 0.59 ms. Allocated memory is still 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-21 20:01:00,295 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.56 ms. Allocated memory is still 145.2 MB. Free memory was 102.6 MB in the beginning and 92.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-21 20:01:00,296 INFO L168 Benchmark]: Boogie Preprocessor took 110.86 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 92.6 MB in the beginning and 180.5 MB in the end (delta: -87.9 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-21 20:01:00,297 INFO L168 Benchmark]: RCFGBuilder took 333.20 ms. Allocated memory is still 202.4 MB. Free memory was 180.5 MB in the beginning and 165.9 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-07-21 20:01:00,298 INFO L168 Benchmark]: TraceAbstraction took 16721.03 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 165.3 MB in the beginning and 125.9 MB in the end (delta: 39.4 MB). Peak memory consumption was 72.4 MB. Max. memory is 7.1 GB. [2020-07-21 20:01:00,302 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59 ms. Allocated memory is still 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 245.56 ms. Allocated memory is still 145.2 MB. Free memory was 102.6 MB in the beginning and 92.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.86 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 92.6 MB in the beginning and 180.5 MB in the end (delta: -87.9 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 333.20 ms. Allocated memory is still 202.4 MB. Free memory was 180.5 MB in the beginning and 165.9 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16721.03 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 165.3 MB in the beginning and 125.9 MB in the end (delta: 39.4 MB). Peak memory consumption was 72.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 36]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant [2020-07-21 20:01:00,312 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-21 20:01:00,312 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-21 20:01:00,313 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-21 20:01:00,313 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((0 == (pa + ad1 * 7) % 8 && unknown-#memory_int-unknown[ad1][(pa + ad1 * -1) / 8 * 8 + ad1] == (pa + ad1 * -1) / 8) && i <= unknown-#memory_int-unknown[pa][pa]) && pa == ad1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.5s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 47 SDtfs, 4 SDslu, 80 SDs, 0 SdLazy, 56 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 12.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 10 PreInvPairs, 12 NumberOfFragments, 140 HoareAnnotationTreeSize, 10 FomulaSimplifications, 95 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 70 FormulaSimplificationTreeSizeReductionInter, 2.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 13.0s InterpolantComputationTime, 49 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 63 ConstructedInterpolants, 9 QuantifiedInterpolants, 10712 SizeOfPredicates, 22 NumberOfNonLiveVariables, 217 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 1/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...